2008A&A...482..699C


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.25CET07:52:02

2008A&A...482..699C - Astronomy and Astrophysics, volume 482, 699-729 (2008/5-1)

Double-blind test program for astrometric planet detection with Gaia.

CASERTANO S., LATTANZI M.G., SOZZETTI A., SPAGNA A., JANCART S., MORBIDELLI R., PANNUNZIO R., POURBAIX D. and QUELOZ D.

Abstract (from CDS):

The scope of this paper is twofold. First, it describes the simulation scenarios and the results of a large-scale, double-blind test campaign carried out to estimate the potential of Gaia for detecting and measuring planetary systems. The identified capabilities are then put in context by highlighting the unique contribution that the Gaia exoplanet discoveries will be able to bring to the science of extrasolar planets in the next decade. We use detailed simulations of the Gaia observations of synthetic planetary systems and develop and utilize independent software codes in double-blind mode to analyze the data, including statistical tools for planet detection and different algorithms for single and multiple Keplerian orbit fitting that use no a priori knowledge of the true orbital parameters of the systems. 1) Planets with astrometric signatures α≃3 times the assumed single-measurement error σψ and period P≤5yr can be detected reliably and consistently, with a very small number of false positives. 2) At twice the detection limit, uncertainties in orbital parameters and masses are typically 15-20%. 3) Over 70% of two-planet systems with well-separated periods in the range 0.2≤P≤9yr, astrometric signal-to-noise ratio 2≤α/σψ≤50, and eccentricity e≤0.6 are correctly identified. 4) Favorable orbital configurations (both planets with P≤4yr and α/σψ≥10, redundancy over a factor of 2 in the number of observations) have orbital elements measured to better than 10% accuracy >90% of the time, and the value of the mutual inclination angle irel determined with uncertainties ≤10.5°) Finally, nominal uncertainties obtained from the fitting procedures are a good estimate of the actual errors in the orbit reconstruction. Extrapolating from the present-day statistical properties of the exoplanet sample, the results imply that a Gaia with σψ=8µas, in its unbiased and complete magnitude-limited census of planetary systems, will discover and measure several thousands of giant planets out to 3-4AUs from stars within 200pc, and will characterize hundreds of multiple-planet systems, including meaningful coplanarity tests. Finally, we put Gaia's planet discovery potential into context, identifying several areas of planetary-system science (statistical properties and correlations, comparisons with predictions from theoretical models of formation and evolution, interpretation of direct detections) in which Gaia can be expected, on the basis of our results, to have a relevant impact, when combined with data coming from other ongoing and future planet search programs.

Abstract Copyright:

Journal keyword(s): stars: planetary systems - astrometry - methods: data analysis - methods: numerical - methods: statistical - stars: statistics

Simbad objects: 78

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Number of rows : 78

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME THA As* 00 00 -62.0           ~ 359 0
2 * ups And c Pl 01 36 47.84216 +41 24 19.6443           ~ 143 1
3 UCAC4 657-006214 PM* 01 36 50.4042757949 +41 23 32.123869669       13.65   M4.5V 19 0
4 HD 11964c Pl 01 57 09.6073695508 -10 14 32.731766141           ~ 17 1
5 HD 11964b Pl 01 57 09.6073695508 -10 14 32.731766141           ~ 23 1
6 HD 12661c Pl 02 04 34.2883519451 +25 24 51.514208219           ~ 50 1
7 HD 12661b Pl 02 04 34.2883519451 +25 24 51.514208219           ~ 61 1
8 MBM 12 MoC 02 56 50 +19 32.0           ~ 211 1
9 BD+20 518b Pl 03 11 14.2302021896 +21 05 50.492694589           ~ 21 1
10 BD+20 518c Pl 03 11 14.2302021896 +21 05 50.492694589           ~ 16 1
11 Cl Melotte 20 OpC 03 26 42 +48 48.0           ~ 761 0
12 * eps Eri BY* 03 32 55.8449634 -09 27 29.731165 5.19 4.61 3.73 3.00 2.54 K2V 1720 1
13 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 3037 0
14 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1232 0
15 LDN 1642 MoC 04 35 18 -14 13.9           ~ 138 0
16 HD 37124c Pl 05 37 02.4866790656 +20 43 50.834619370           ~ 53 1
17 HD 37124b Pl 05 37 02.4866790656 +20 43 50.834619370           ~ 63 1
18 HD 37124d Pl 05 37 02.4866790656 +20 43 50.834619370           ~ 36 1
19 HD 38529c Pl 05 46 34.9129896843 +01 10 05.512540812           ~ 65 1
20 HD 38529b Pl 05 46 34.9129896843 +01 10 05.512540812           ~ 76 1
21 HD 47536 PM* 06 37 47.6183014773 -32 20 23.033515609   6.43 5.258     K1III 92 1
22 HD 69830d Pl 08 18 23.9469692487 -12 37 55.810202572           ~ 40 1
23 HD 69830c Pl 08 18 23.9469692487 -12 37 55.810202572           ~ 46 1
24 HD 69830b Pl 08 18 23.9469692487 -12 37 55.810202572           ~ 56 1
25 HD 73526c Pl 08 37 16.4834968915 -41 19 08.787335986           ~ 36 1
26 HD 73526b Pl 08 37 16.4834968915 -41 19 08.787335986           ~ 46 1
27 IC 2391 OpC 08 40 32 -53 02.0           ~ 725 0
28 L 675-81 PM* 08 40 59.2055621000 -23 27 22.598649814   13.2 11.975 11.637 9.37 M3.5V 110 1
29 NAME eta Cha Association MGr 08 42 06 -79 01.6           ~ 313 0
30 HD 74156c Pl 08 42 25.1221445320 +04 34 41.146391815           ~ 50 1
31 HD 74156d Pl? 08 42 25.1221445320 +04 34 41.146391815           ~ 18 1
32 HD 74156b Pl 08 42 25.1221445320 +04 34 41.146391815           ~ 57 1
33 * rho01 Cnc c Pl 08 52 35.8113282132 +28 19 50.956901366           ~ 124 1
34 * rho01 Cnc e Pl 08 52 35.8113282132 +28 19 50.956901366           ~ 416 1
35 * rho01 Cnc d Pl 08 52 35.8113282132 +28 19 50.956901366           ~ 136 1
36 * rho01 Cnc B PM* 08 52 40.8627482955 +28 18 58.824842873   14.80   12.814   M4.5V 122 1
37 HD 82943c Pl 09 34 50.7352288445 -12 07 46.363303103           ~ 77 1
38 HD 82943b Pl 09 34 50.7352288445 -12 07 46.363303103           ~ 90 1
39 NAME eta Car Cluster Cl* 10 45 03.0 -59 41 04           ~ 25 1
40 * 47 UMa c Pl 10 59 27.9738644892 +40 25 48.922388918           ~ 88 1
41 * 47 UMa b Pl 10 59 27.9738644892 +40 25 48.922388918           ~ 145 1
42 NAME TW Hya Association As* 11 01.9 -34 42           ~ 830 0
43 HD 108874c Pl 12 30 26.8817523074 +22 52 47.380606770           ~ 31 1
44 HD 108874b Pl 12 30 26.8817523074 +22 52 47.380606770           ~ 42 1
45 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 581 0
46 HD 128311c Pl 14 36 00.5607343227 +09 44 47.453643485           ~ 48 1
47 HD 128311b Pl 14 36 00.5607343227 +09 44 47.453643485           ~ 61 1
48 BD-07 4003d Pl 15 19 26.8271336166 -07 43 20.190958776           ~ 139 1
49 BD-07 4003c Pl 15 19 26.8271336166 -07 43 20.190958776           ~ 96 1
50 BD-07 4003b Pl 15 19 26.8271336166 -07 43 20.190958776           ~ 73 1
51 NAME Lup Cloud SFR 16 03 -38.1           ~ 535 0
52 NAME ASSOC II SCO As* 16 15 -24.2           ~ 1149 1
53 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3083 0
54 HD 155358c Pl 17 09 34.6179324422 +33 21 21.086408841           ~ 19 1
55 HD 155358b Pl 17 09 34.6179324422 +33 21 21.086408841           ~ 21 1
56 * mu. Ara c Pl 17 44 08.7036342277 -51 50 02.591049123           ~ 76 2
57 * mu. Ara d Pl 17 44 08.7036342277 -51 50 02.591049123           ~ 55 2
58 * mu. Ara b Pl 17 44 08.7036342277 -51 50 02.591049123           ~ 77 2
59 * mu. Ara e Pl 17 44 08.7036342277 -51 50 02.591049123           ~ 34 2
60 HD 168443c Pl 18 20 03.9331764016 -09 35 44.609316076           ~ 85 1
61 HD 168443b Pl 18 20 03.9331764016 -09 35 44.609316076           ~ 89 1
62 HD 169830c Pl 18 27 49.4852008378 -29 49 00.705771732           ~ 34 1
63 HD 169830b Pl 18 27 49.4852008378 -29 49 00.705771732           ~ 44 1
64 NAME Serpens Cluster Cl* 18 29 57 +01 14.4           ~ 59 0
65 NAME CrA Dark Cloud MoC 19 01 51 -36 58.9           ~ 403 0
66 HD 190360c Pl 20 03 37.4049065078 +29 53 48.495330996           ~ 42 1
67 HD 190360b Pl 20 03 37.4049065078 +29 53 48.495330996           ~ 47 1
68 HD 202206b Pl 21 14 57.7684954746 -20 47 21.162361638           ~ 52 1
69 HD 202206c Pl 21 14 57.7684954746 -20 47 21.162361638           ~ 36 1
70 BD-15 6290b Pl 22 53 16.7323107416 -14 15 49.303409936           ~ 219 1
71 BD-15 6290d Pl 22 53 16.7323107416 -14 15 49.303409936           ~ 135 1
72 BD-15 6290c Pl 22 53 16.7323107416 -14 15 49.303409936           ~ 167 1
73 BD-15 6290 BY* 22 53 16.7323107416 -14 15 49.303409936 12.928 11.749 10.192 9.013 7.462 M3.5V 866 1
74 HD 217107c Pl 22 58 15.5411942071 -02 23 43.387117210           ~ 50 1
75 HD 217107b Pl 22 58 15.5411942071 -02 23 43.387117210           ~ 82 1
76 NAME AB Dor Moving Group MGr ~ ~           ~ 373 0
77 NAME Galactic Bulge reg ~ ~           ~ 3484 0
78 NAME Hercules-Lyra Moving Group MGr ~ ~           ~ 54 0

    Equat.    Gal    SGal    Ecl

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2020.11.25-07:52:02

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